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| Old School Soldering |
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| joeqsmith:
Machined up a about the largest bit of copper I thought I could use before it gets in the way. I tried a few heat cycles with the propane torch and did some through hole soldering with it. It's better than I would have expected. Using one of my original Pace tips. |
| TerraHertz:
--- Quote from: Cyberdragon on January 05, 2021, 04:36:07 pm ---No, an oxy torch is far worse, If this thing leaks, you get a fire. If an oxy torch leaks on the fuel line before the arrestor it could ignite, flashback, and blow up the whole tank killing everyone in the room. That's why they should always be inspected before each use and why they put oderant in acetelyne. --- End quote --- The other 'nice' thing about acetylene, is that if the confined gas pressure is allowed to rise above about 15 PSI, it can spontaneously detonate. Doesn't need any oxidant. This is why acetylene cylinders are complicated things, full of porous material soaked in acetone, with the acetylene disolved in the acetone. Even the top of the cylinder around the outlet is packed with asbestos cloth. The aim is to avoid any significant volume of high pressure raw acetylene. I don't know why anyone would consider these old kerosene torches dangerous. Any more than just a bottle of kerosene. They are not pumped up to high pressure, just enough to push some kerosene up into the heated tubing where it becomes a gas to produce the flame. It's the expansion of the small amount of heated kero that creates the 'blow' of the flame. Plus the kero tank is not going to suddenly spring a leak. The seams are mechanical, with solder just to seal. The solder can't melt while there's kero inside, and if there's no kero, then a leak due to melted solder seam is not a problem either. I guess if you filled it then put the whole thing in a fire, it could explode, but that's a silly case. They are however a pain to run. Clogged jet being one annoyance. As for filling a plastic bag with any fuel-oxy mix, now *that's* a death wish. Static electricity and plastic bags... That guy in the video was just lucky. Here's my old torch. Haven't run it for decades. Yes I do have some big copper-block soldering irons for it. It's a 'just in case' relic. Hmm, it still holds some kerosene, but the pump seal is dead. |
| coppercone2:
modern acetylene cylinders use THF instead of acetone and there is alot of safety work that went into them since there was a explosion in australia a long time ago. Some of the concerns that people have no longer apply to modern tanks, but all concerns involving gas are still the same. |
| joeqsmith:
The post apocalyptic Pace iron. |
| joeqsmith:
Seems like batteries shouldn't be used. My old Central Scientific Galvanometer, model 375-4. http://www2.humboldt.edu/scimus/Manufac/Cenco/Cenco.htm |
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